Heuchera plant named ‘Havana’

ABSTRACT

A new and distinct  Heuchera  plant characterized by rose colored flowers in a wand-type inflorescence, small yellow to lime colored leaves, very free flowering on short flower stalks, repeat blooming, and a well branched, small, mounding habit.

Botanical denomination: Heuchera sp.

Variety designation: ‘Havana’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Heuchera and given the cultivar name of ‘Havana’. Heuchera is in the family Saxifragaceae. Heuchera ‘Havana’ originated from a cross between Heuchera 796-8, a proprietary non-commercial hybrid, as the seed parent, and Heuchera 758-1, a proprietary non-commercial hybrid, as, as the pollen parent.

Compared to the seed parent, Heuchera 796-8, the new cultivar has yellow to lime colored leaves rather than purple brown.

Compared to the pollen parent, Heuchera 758-1, the new cultivar has yellow to lime colored leaves rather than purple.

There are no similar Heuchera on the market.

This new Heuchera is uniquely distinguished by:

-   -   1. rose colored flowers in a wand-type inflorescence,     -   2. small, veiled, lime colored leaves,     -   3. very free flowering on short flower stalks,     -   4. repeat blooming, and     -   5. a well branched, small, mounding habit.

This new cultivar has been reproduced only by asexual propagation (tip cuttings and tissue culture). Each of the progeny exhibits identical characteristics to the original plant. Asexual propagation by cuttings and tissue culture using standard micropropagation techniques with terminal and lateral shoots, as done in Canby, Oreg., shows that the foregoing characteristics and distinctions come true to form and are established and transmitted through succeeding propagations. The present invention has not been evaluated under all possible environmental conditions. The phenotype may change with variations in environment without a change in the genotype of the plant.

BRIEF DESCRIPTION OF THE DRAWING

The photo shows a ten-month-old plant of Heuchera ‘Havana’ growing in a one gallon container in the greenhouse in Canby, Oreg.

DETAILED PLANT DESCRIPTION

The following is a detailed description of the new Heuchera cultivar based on observations taken in June of a three-year-old specimen growing in a one gallon container outside in an open greenhouse in Canby, Oreg. Canby is Zone 8 on the USDA Hardiness map. Temperatures range from a high of 95 degrees F. in August to and average of 32 degrees F. in January. Normal rainfall in Canby is 42.8 inches per year. The color descriptions are all based on The Royal Horticultural Society Colour Chart, 5^(th) edition.

-   Plant:     -   -   Form.—Basal rosette, herbaceous perennial.         -   Hardiness.—USDA Zone 4 to 9.         -   Size.—21 cm tall from top of the foliage to the ground and             39 cm wide.         -   Habit.—Mounding.         -   Vigor.—Good.         -   Number of crowns.—10. -   Leaf:     -   -   Type.—Simple.         -   Arrangement.—Rosette.         -   Shape.—Broadly ovate to orbicular.         -   Lobing/division.—5 shallow lobes, the terminal the longest,             shallow secondary lobes.         -   Venation.—Palmate.         -   Margins.—Broadly crenate.         -   Apex.—Mucronulate.         -   Base.—Cordate, lobes overlapping at the base.         -   Blade size.—Grows to 10 cm long and 9 cm wide.         -   Surface texture.—Glandular on the top and on the bottom.         -   Petiole description.—Grows to 12.5 cm long and 2 mm wide,             glandular hairs, Yellow Green 146C and tinted Greyed Red             179A in sun.         -   Leaf color.—Topside, young leaves Yellow Green 144A on             margins and around veins with a white veil giving a color             closest to Green 139D, bottom side Yellow Green 147C; older             leaves lighten to Yellow Green 144A on margins and veins             with a yellow white veil closest to Green Yellow 1D, bottom             side Yellow Green 145C. -   Inflorescence:     -   -   Size.—Grows to 3 cm wide and 28 cm long.         -   Type.—Congested thyrse.         -   Number of flowers per thyrse.—About 90.         -   Number of thyrse.—About 19 in the first spring flush.         -   Size of inflorescence.—Grows to 11 cm long and 3 cm wide.         -   Peduncle.—About 20 cm long, 3 mm wide at base, Greyed Orange             177A, glandular hairs, usually with no cauline leaves.         -   Pedicel.—Variable in size, with glandular hairs, Greyed             Orange 177A.         -   Bloom period.—May through June with sporadic rebloom until             September in Canby, Oreg. -   Flower bud:     -   -   Size.—2 mm wide and 5 mm long.         -   Description.—Glandular puberulent, narrow ovoid.         -   Color.—Red 53B. -   Flower:     -   -   Type.—Perfect.         -   Shape.—Campanulate.         -   Size.—5 mm long and 5 mm wide.         -   Corolla description.—5 petals, 2 mm long and 1 mm wide,             broadly spatulate, glabrous on both sides, acute tip,             attenuate base, bottom half entire, top half shallowly             crenate, topside Red 54D, bottom side Red 54B.         -   Calyx description.—Campanulate, 6 mm long and 6 mm wide,             with 5 lobes flared and divided ½ way to the base, each 3 mm             wide and 3 mm long, ovate, glandular hairs inside and             outside, tips acute, margin entire with occasional teeth;             lobe tips Red Purple 59B inside and out, lobe bases 59C,             tube inside and outside 59D.         -   Stamen description.—5 in number, filaments 2 mm long, White             NN155C, anthers 0.4 mm, undehisced Red Purple 59C, no             pollen, male sterile.         -   Pistil description.—1, 2-beaked, 4 mm long; ovary 2 mm long,             Green Yellow 1C; style 2 mm long, White NN155C.         -   Fragrance.—None.         -   Lastingness.—Each thyrse blooms for about 3 weeks on the             plant. -   No fruit or seed, female sterile: -   Pest and disease tolerance: Excellent disease resistance to powdery     mildew, the common problem of Heuchera. Susceptible to Heuchera rust     and root weevils. 

1. A new and distinct Heuchera plant as herein illustrated and described. 